452 MR. G. B. SOWERBY ON MADAGASCAR LAND-SHELLS. [May 6, 



Fii;-. 13. Eriffone dybowskiii ■ p. 449. 



a, profile ; 6, Spider from above, without legs ; c, cephalothorax ; 

 (/.ditto, from the front; e, f, palpi, in two positions; g, natural 

 length of Spicier. 

 14. Erigone mbrostrata <J , p. 450. 



a, profile ; b, cephalothorax, from the front ; c, d, palpi, in two posi- 

 tions ; c, natural length of Spider. 



2. On three new Species of Land-Shells from Madagascar. 

 By G. B. Sowerby, jun. 



[Keceived March 18, 1873.] 



1. Cyclosioma (Tropidophora) suffusum, sp. nor. 



Testa globoso-turbinata, obtecte umbilicata, rvfo ccerulescentesuf- 

 fusa, versus apicem aurantiaca, plus minusve obscure purpureo 

 fasciata ; anfractibus undique spiraliter stria tis, ultimo circa 

 umbilicum lira to ; a per fur a oblique circular! ; fauce rufo-prui- 

 nosa ; labro expanso, sanguineo ; operculo calcareo, piano. 

 A Cyclostoma of ordinary type, belonging to the section Tropido- 

 phora, Trosc, with rounded whorls, without keels, throughout re- 

 gularly spirally striated, with an expanded red lip and plum- 

 coloured interior, yellowish towards the apex ; whorls more or less 

 obscurely banded with purple, and the body-whorl suffused with red, 

 which increases in intensity towards the mouth. 



2. Cyclostoma vexillum, sp. nov. 



Testa ovato-turrita, angustissime umbilicata, tenui, f acescent e, 



atro lineata et unifasciata ; anfractibus convexis, Icevibus vel 



concent rice minutissime striatis; apertura circulari, labro te- 



nuiter expanso ; operculo calcareo, piano. 



A pretty little species, of simple characters, elevated spire, very 



small umbilicus, thin substance, and yellowish colour, with a black 



band on the lower part of the whorls, from one to three narrow linear 



bands above and two round the umbilicus. 



3. Cyclostoma (Tropidophora) perspectivum, sp. nor. 



Testa depresso-turbinata, patentissime umbilicata, pallide rufo- 

 fusca ; spira depressiuscula ; anfractibus anguste rotundatis, 

 superne spiraliter obtuse liratis, concentrice decussate striatis, 

 medio obsolete striatis, latissime unicarinatis, ultimo circa 

 umbilicum valide lirato ; apice plumbeo ; apertura subcirculari ; 

 labro rufo-brunneo, late expanso reflexo, superne producto; oper- 

 culo calcareo, piano. 

 A very widely umbilicated species, with a broad keel, of a uni- 

 form light reddish-brown colour ; upper part of the whorls decus- 

 sated, strongly corded round the umbilicus ; lip deep reddish-brown, 

 expanded and reflected, produced at the upper part. 



